In this paper, progress made so far in the performance testing of waveguide laser components sent by NASA Langley
Research Center on MISSE 6 mission will be discussed. The objective of the Materials International Space Station
Experiment (MISSE) is to study the performance of novel materials when subjected to the synergistic effects of the
harsh space environment for several months. MISSE missions provide an opportunity for developing space qualifiable
materials. The results of post-testing of several optical materials that were recently returned back after more than one
year of exposure on the International Space Station (ISS) will be presented. The items were part of the MISSE 6 mission
that was transported to the ISS via STS 123 on March 11, 2008 and returned to the Earth via STS 128 that was launched
on August 2009. The materials experienced no visible damage during lengthy exposure in space. In the case of laser
diode, a comparison of elemental analysis with pre-flight conditions will be presented. Furthermore, the optical
components sent on MISSE 7 mission via STS-129 and later retrieved by STS-134 will be briefly discussed.